k-on!:K-On! (けいおん! Keion!) is a Japanese four-panel comic strip manga written and illustrated by Kakifly. The manga started serialization in Houbunsha's seinen manga magazine Manga Time Kirara since the May 2007 issue, and also started a bimonthly serialization in Houbunsha's magazine Manga Time Kirara Carat since the October 2008 issue. A thirteen-episode anime adaptation produced by Kyoto Animation aired in Japan between April and June 2009. An additional original video animation episode was released in January 2010. A second season will begin airing in Japan in April 2010. The title of the series comes from the Japanese word for light music, keiongaku (軽音楽?), but in the Japanese context is similar to pop music.

K-On!'s story revolves around four Japanese high school girls who join their school's light music club to try to save it from being abolished. However, they are the only members of the club, and at first Yui Hirasawa, the main character, has no experience playing musical instruments or reading sheet music. Eventually, she learns how to be an excellent guitar player. The rest of the club helps her to buy a guitar, and they perform successfully at the school festival. kyoto animation:http://www.kyotoanimation.co.jp/kotobuki tsumugi:Tsumugi Kotobuki (琴吹 紬 Kotobuki Tsumugi)Tsumugi, often referred to as 'Mugi' by her friends, is a wealthy girl with a gentle and sweet personality who plays a Korg Triton Extreme 76 Key keyboard in the light music club, and, in the anime's closing credits, a Korg RK-100 Keytar. Tsumugi is considered a piano prodigy since she has been playing the piano since she was four and has experience in winning various piano contests. She is the daughter of a company president, and her family has several villas in various places around Japan (and even one in Finland, much to Ritsu, Azusa and Ui's surprise when they try to contact her at home). Since her father also owns a maid café, she often brings confectionery and an assortment of sweets and pastries to the club room, and she diligently makes tea with a tea set which is kept in their club room. Although she is a sweet and gentle girl, she is often weirdly entranced by the sight of two girls interacting closely together, sometimes imagining something more risqué in her head (both Mio and Ritsu find this awkward at times). The series sometimes indicates that Mugi has a crush on their teacher, Sawako Yamanaka. She originally intended to join the choir club, but joins the light music club instead after receiving an invitation and encouragement from both Mio and Ritsu. Despite her being wealthy, she also tries her hand at a part-time job at a fast-food restaurant. While a lot of things do not bother her, she is fairly conscious about her weight (just like Mio), and she gets a bit anxious when her family's staff start spoiling her friends during villa visits.